<template>
  <view>
    <view class="login_box" v-if="!token" >
      <!-- 提示登录的图标 -->
      <uni-icons type="contact-filled" size="100" color="#AFAFAF"></uni-icons>
      <!-- 登录按钮 -->
      <button type="primary" class="btn-login" @click="getUserProfile">一键登录</button>
      <!-- 登录提示 -->
      <view class="tips-text">登录后尽享更多权益</view>
    </view>
    <my_user v-else :windowHeight='windowHeight'></my_user>
  </view>
</template>

<script>
  import { mapState,mapMutations } from "vuex"
  export default {
    data() {
      return {
        windowHeight:0,
      };
    },
    onLoad() {
      this.windowHeight = uni.getSystemInfoSync().windowHeight
    },
    computed:{
      ...mapState('user',['token','redirectInfo'])
    },
    methods:{
      ...mapMutations('user',['getUserInof','getToken','updateRedirectInfo']),
      getUserProfile() {
        uni.getUserProfile({
          desc: '你的授权信息',
          success: (res) => {
            this.getUserInof(res.userInfo);
            this.getLogin(res)
          }, 
          fail(err) {
            uni.$showMsg('您取消了授权')
          }
        })
      },
      async getLogin(info) {
        const [err, res] = await uni.login().catch(err => err)
        if(res.errMsg !== "login:ok") return uni.$showMsg('用户登录失败')
        const query = {
          code: res.code,
          encryptedData: info.encryptedData,
          iv: info.iv,
          rawData: info.rawData,
          signature: info.signature
        }
        // 换取 token
        // const { data: loginResult } = await uni.$http.post('/api/public/v1/users/wxlogin', query)
        // if (loginResult.meta.status !== 200) return uni.$showMsg('登录失败！')
        // uni.$showMsg('登录成功')
        this.getToken(res.code) //持久化token
        this.navCart()
      },
      // 登录成功后调跳回原来的页面
      navCart() {
        if(this.redirectInfo !==null && this.redirectInfo.openType === 'switchTab' ) {
          uni.switchTab({
            url:this.redirectInfo.from
          });
          complete:() => {
            this.updateRedirectInfo(null)
          }
        }
      }
    }
  }
</script>

<style lang="scss">
.login_box {
  height: 750rpx;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-color: #f8f8f8;
  position: relative;
  overflow: hidden;
   // 绘制登录盒子底部的半椭圆造型
    &::after {
      content: ' ';
      display: block;
      position: absolute;
      width: 100%;
      height: 40px;
      left: 0;
      bottom: 0;
      background-color: white;
      border-radius: 100%;
      transform: translateY(50%);
    }
  .btn-login {
    width: 90%;
    border-radius: 100px;
    margin: 15px 0;
    background-color: #c00000;
  }
  .tips-text {
    font-size: 12px;
    color: gray;
  }
}
</style>
